* {
    margin: 0;
    padding: 0;
}

/*
 html: div
 css:选择器-元素选择器-后代选择器--子代选择器
 flex：display: flex;
    justify-content: center;
 */
.top {
    /*border: 1px solid red;*/
    background-image: url("../img/banner_qtah.jpg");
    background-size: 100% 100%;
    height: 808px;


    color: white;
}

.top > div:first-child {
    display: flex;
    justify-content: center;

}

.top > div:first-child > div {
    width: 1000px;
    height: 141px;
}

.top > div:first-child > div > div:first-child {
    height: 141px;
    width: 204px;
}

.top > div:first-child > div > div:first-child > img {
    width: 100%;
    height: 100%;
}

.top > div:first-child > div {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.top > div:first-child > div > div:nth-child(2) {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/*导航*/
.top > div:nth-child(2) {
    background-color: rgb(230, 145, 55);
    height: 50px;
    display: flex;
    justify-content: center;
}

.top > div:nth-child(2) > div {
    width: 1000px;
    height: 50px;
    display: flex;
    justify-content: space-around;
    /*align-items: center;*/
}

/*.top > div:nth-child(2) > div > div {*/
/*    cursor: pointer;*/
/*    height: 50px;*/
/*    line-height: 50px;*/
/*    padding: 0 20px;*/
/*}*/
a{
    text-decoration: none;
}
.top > div:nth-child(2) > div > a > div {
    cursor: pointer;
    height: 50px;
    line-height: 50px;
    padding: 0 20px;
}

.top > div:nth-child(2) > div > a:hover {
    background-color: white;
    color: rgb(230, 145, 55);

}

/*广告*/
.top > div:nth-child(3) {
    display: flex;
    justify-content: center;
}

.top > div:nth-child(3) > div {
    width: 1000px;
    height: 500px;
    /*border: 1px solid red;*/
}

.top > div:nth-child(3) > div > div:nth-child(1) {
    /*上 右 下 左*/
    margin: 50px 0 30px;
    font-size: 50px;
}

.top > div:nth-child(3) > div > div:nth-child(2) > div {
    /*margin: 5px 0;*/
    line-height: 30px;
}

.top > div:nth-child(3) > div > div:nth-child(3) > div:nth-child(1) {
    display: flex;
    justify-content: flex-start;
    align-items: flex-end;
    font-size: 25px;
}

.top > div:nth-child(3) > div > div:nth-child(3) > div:nth-child(1) > div:nth-child(even) {
    color: rgb(230, 145, 55);
    font-size: 35px;
}

.top > div:nth-child(3) > div > div:nth-child(3) > div {
    margin: 20px 0;
}

.top > div:nth-child(3) > div > div:nth-child(3) > div:nth-child(2) {
    color: rgb(230, 145, 55);
    font-size: 35px;
    /*margin-left: 50px;*/
    text-indent: 1.5em;
}
